994678331 has 2 divisors, whose sum is σ = 994678332. Its totient is φ = 994678330.

The previous prime is 994678303. The next prime is 994678357. The reversal of 994678331 is 133876499.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 994678331 - 2¹⁴ = 994661947 is a prime.

It is a super-2 number, since 2×994678331² = 1978769964321891122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 994678331.

It is not a weakly prime, because it can be changed into another prime (994677331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497339165 + 497339166.

It is an arithmetic number, because the mean of its divisors is an integer number (497339166).

Almost surely, 2^994678331 is an apocalyptic number.

994678331 is a deficient number, since it is larger than the sum of its proper divisors (1).

994678331 is an equidigital number, since it uses as much as digits as its factorization.

994678331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 50.

The square root of 994678331 is about 31538.5213825886. The cubic root of 994678331 is about 998.2229543125. Note that the first 3 decimals are identical.

The spelling of 994678331 in words is "nine hundred ninety-four million, six hundred seventy-eight thousand, three hundred thirty-one".